Fig. 1. (a) NVST architectural section; (b) diagram of optical platform

Fig. 2. Schematic of optical path of NVST multiband high resolution imaging observation system

Fig. 3. Schematic of pinhole array aperture

Fig. 4. (a) Grayscale anti-image of pinhole array image obtained by Hα channel; (b) grayscale anti-image pinhole array obtained by TiO channel

Fig. 5. Residual error distribution of Hα channel pinhole array image after RST transformation field calibration of four parameters

Fig. 6. Changes of four parameters after RST transformation in de-rotation process. (a) Rotation actor; (b) scaling factor; (c) x-axis translation factor; (d) x-axis translation factor

Fig. 7. (a) Hα line center chromosphere image after RST transformation; (b) TiO synchronous frame image corresponding to figure 7(a); (c) Hα far line-wing photosphere image after RST transformation (656.28~656.30 nm); (d) TiO synchronous frame image corresponding to figure 7(c)

Fig. 8. Local correlation offset vector distribution of Hα far line-wing photosphere image after RST transformation compared with the corresponding TiO synchronous frame image